Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

· · 来源：dev资讯

«Мечтать — почти преступление» Как афганские женщины живут под властью талибов. Фоторепортаж из Афганистана21 декабря 2025

Цены на нефть взлетели до максимума за полгода17:55

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Hurdle: Everything you need to know to find the answers

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2024年12月25日 星期三 新京报